Water and wastewater treatment processes are critical to maintaining a clean and safe water supply. These processes involve the treatment of various types of water, including drinking water, industrial wastewater, and sewage. Through these treatments, when the water quality reaches the desired level, it can be reused or discharged. A large number of microorganisms, bacteria, acid and alkaline liquids, flammable and explosive gases and sediments will be produced during the water treatment process, so it is important to choose the appropriate valve.
Mechanical treatment section (primary treatment): The mechanical first-level treatment section includes structures such as grilles, grit chambers, and primary sedimentation tanks. It is used to remove coarse particles and suspended solids. The principle of treatment is to achieve solid-liquid processing through physical methods. Separation, the separation of pollutants from sewage, is a common treatment method for sewage treatment.
Biochemical treatment of sewage (secondary treatment): Biochemical treatment of sewage is a secondary treatment, which is developed to remove unsettled suspended matter and dissolved biodegradable organic matter. There are a variety of processes, which can be divided into biofilm method and activated sewage treatment. Mud method (AB method, A/O method, A2/O method, SBR method, oxidation ditch method) stabilized pond method, land treatment method and other treatment methods.
Advanced treatment of water (tertiary treatment): denitrify and dephosphorize the water that has been treated by sewage biochemical treatment, and then use activated carbon adsorption or reverse osmosis to remove remaining pollutants in the water, and then use ozone or chlorine to disinfect and kill bacteria and viruses, and then send the treated water to the main waterway as a water source for flushing toilets, spraying streets, watering green belts, industrial water, fire prevention, etc.
